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CVE-2011-0447

23
FAUCET Score

CVE-2011-0447 describes a cross-site request forgery (CSRF) vulnerability in Ruby on Rails versions 2.1.x, 2.2.x, 2.3.x before 2.3.11, and 3.x before 3.0.4. The flaw stems from insufficient validation of HTTP requests containing an X-Requested-With header, enabling attackers to forge AJAX or API requests. With a CVSS score of 6.8, this vulnerability is of medium severity, indicating a network-based attack with medium complexity that could lead to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.1.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.1.0:*:*:*:*:*:*:*
2.1.1CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.1.1:*:*:*:*:*:*:*
2.1.2CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.1.2:*:*:*:*:*:*:*
2.2.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.2.0:*:*:*:*:*:*:*
2.2.1CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.2.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.41%
Probability of exploitation in next 30 days
EPSS Percentile
69.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0141 is in the 41st percentile among its peer group of 19,953 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

rubygemspatch availablevia ghsa
Product: actionpackFixed in: 2.3.11
rubygemspatch availablevia ghsa
Product: actionpackFixed in: 3.0.4

Vendor Advisories (1)

rubygemsGHSA-24fg-p96v-hxh8medium

actionpack Cross-Site Request Forgery vulnerability

Oct 24, 2017

References

groups.google.com / group/rubyonrails-security/msg/c22ea1668c0d181c
Patch
lists.fedoraproject.org / pipermail/package-announce/2011-April/057650.html
lists.fedoraproject.org / pipermail/package-announce/2011-March/055074.html
lists.fedoraproject.org / pipermail/package-announce/2011-March/055088.html
secunia.com / advisories/43274
secunia.com / advisories/43666
weblog.rubyonrails.org / 2011/2/8/csrf-protection-bypass-in-ruby-on-rails
PatchVendor Advisory
debian.org / security/2011/dsa-2247
securityfocus.com / bid/46291
securitytracker.com / id
vupen.com / english/advisories/2011/0587
vupen.com / english/advisories/2011/0877